Arieous K. Walton-Merritt of Kansas City is charged with assault and armed criminal action in connection with the Nov. 30 shooting.

According to court records, the boy told police he shot the victim outside the school because of a dispute over a stolen Xbox. Walton-Merritt said he bought the rifle used in the shooting with the intention of confronting the victim.

A Justice Department civil rights investigation has concluded that the Ferguson Police Department and the city's municipal court engaged in a "pattern and practice" of discrimination against African Americans, targeting them disproportionately for tr...